Atividade de extratos etanólicos sobre o controle "in vitro" de Colletotrichum musae
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Data
2015-02-23
Autores
Carminate, Bruna
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Universidade Federal do Espírito Santo
Resumo
Brazil is the world’s second largest producer of fruits. The Espírito Santo State is
among the largest producer of banana (Musa sp) and contributes considerably to
export this fruit. However, the production has been affected by the occurrence of
diseases post-harvest, affecting the quality and quantity of fruit available for export
and local consumption. Various diseases affect the quality of fruit in post-harvest, as
anthracnose disease caused by the fungus Colletotrichum musae on banana fruit,
which represents the most serious problem in post-harvest this fruit. The use of
fungicides of vegetable origin may constitute an alternative and promising method of
disease control, as well as being easy to obtain and low cost, minimize the toxicity
problems presented by synthetics chemical products. Therefore, the objective of this
study was to evaluate the activity of vegetable extracts of Eugenia astringens
Cambess, Licania tomentosa and Vernonia polyanthes Less in control in vitro fungus
phytopathogenic C. musae. The ethanolic extract was obtained from E. astringen
leaves and seeds, L. tomentosa leaves and V. polyanthes leaves and flowerers by
maceration and performed the phytochemical screening. The compounds of
secondary metabolism were found alkaloids, saponins, flavonoids, phenols and
tannins, steroids, terpenes and coumarins. All extracts tested showed significant
activity on the growth of C. Musae. The most active extract was obtained from
Licania tomentosa leaves and reduced in 60% of the radial growth of mycelia fungus.
The extracts tested showed promising alternative for the control of anthracnose in
banana post-harvest.
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Palavras-chave
Phytochemical screening , Biological control , Anthracnose , Triagem fitoquímica
Citação
CARMINATE, Bruna. Atividade de extratos etanólicos sobre o controle "in vitro" de Colletotrichum musae. 2015. 33 f. Dissertação (Mestrado em Agricultura Tropical) - Programa de Pós-Graduação em Agricultura Tropical, Universidade Federal do Espírito Santo, São Mateus, 2015.